P0140 Secondary Air system
Thread Starter
Intermediate
Joined: Nov 2008
Posts: 42
Likes: 2
From: marietta georgia
P0410 Secondary Air system
I am struggling with this code and am at my last wits before going to see a dealer.
There are some older posts about replacing the check valves. I already followed some of the recommendations. I do have air flow coming out of the air pump ( how do you check if enough?). I also sprayed carberator cleaner and wd40 into the air hoses and used a air compressor to flush it in.
I can easily change the one on the driver side. But is it possible to change the other one behind the intake manifold without removing the manifold?
Any other options to look at?
I dont care much about the code other than that I can't get my Georgia tag without passing emissions. I do have a Vararam intake but it had passed the test several times with it on.
There are some older posts about replacing the check valves. I already followed some of the recommendations. I do have air flow coming out of the air pump ( how do you check if enough?). I also sprayed carberator cleaner and wd40 into the air hoses and used a air compressor to flush it in.
I can easily change the one on the driver side. But is it possible to change the other one behind the intake manifold without removing the manifold?
Any other options to look at?
I dont care much about the code other than that I can't get my Georgia tag without passing emissions. I do have a Vararam intake but it had passed the test several times with it on.
Last edited by radler; Apr 28, 2011 at 11:04 PM. Reason: incorrect code
Tech Contributor
Joined: Jan 2007
Posts: 19,450
Likes: 1,155
From: Dyer, IN
i am struggling with this code and am at my last wits before going to see a dealer.
There are some older posts about replacing the check valves. I already followed some of the recommendations. I do have air flow coming out of the air pump ( how do you check if enough?). I also sprayed carberator cleaner and wd40 into the air hoses and used a air compressor to flush it in.
I can easily change the one on the driver side. But is it possible to change the other one behind the intake manifold without removing the manifold?
Any other options to look at?
I dont care much about the code other than that i can't get my georgia tag without passing emissions. I do have a vararam intake but it had passed the test several times with it on.
There are some older posts about replacing the check valves. I already followed some of the recommendations. I do have air flow coming out of the air pump ( how do you check if enough?). I also sprayed carberator cleaner and wd40 into the air hoses and used a air compressor to flush it in.
I can easily change the one on the driver side. But is it possible to change the other one behind the intake manifold without removing the manifold?
Any other options to look at?
I dont care much about the code other than that i can't get my georgia tag without passing emissions. I do have a vararam intake but it had passed the test several times with it on.
Tech Contributor
Joined: Aug 1999
Posts: 16,376
Likes: 404
From: Should this thoughtful, valuable contribution meet with no acknowledgement or 'thanks' this post----
I am struggling with this code and am at my last wits before going to see a dealer.
There are some older posts about replacing the check valves. I already followed some of the recommendations. I do have air flow coming out of the air pump ( how do you check if enough?). I also sprayed carberator cleaner and wd40 into the air hoses and used a air compressor to flush it in.
I can easily change the one on the driver side. But is it possible to change the other one behind the intake manifold without removing the manifold?
Any other options to look at?
I dont care much about the code other than that I can't get my Georgia tag without passing emissions. I do have a Vararam intake but it had passed the test several times with it on.
There are some older posts about replacing the check valves. I already followed some of the recommendations. I do have air flow coming out of the air pump ( how do you check if enough?). I also sprayed carberator cleaner and wd40 into the air hoses and used a air compressor to flush it in.
I can easily change the one on the driver side. But is it possible to change the other one behind the intake manifold without removing the manifold?
Any other options to look at?
I dont care much about the code other than that I can't get my Georgia tag without passing emissions. I do have a Vararam intake but it had passed the test several times with it on.
Thread Starter
Intermediate
Joined: Nov 2008
Posts: 42
Likes: 2
From: marietta georgia
My bad I ment to post code p0410. I tried to edit but failed. Thanks Lucky for the catch. Should I repost? Yes I also dont care about the code as it is only emissions. But cant get my plate without :-(
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Just remove the intake. Removal is actually pretty easy on these cars and once you do it you will understand. If you do decide to take this on yourself, make sure you vacuum around the intake as best you can as it collects sand and grit that can drop into the heads during removal.
Throttle body can stay on the intake during removal.
Injectors and fuel rail are removed as an assembly.
Hardest part is the coolant lines to the throttle body as they are small and the lower one is kind of a pain to get fingers in there.
Throttle body can stay on the intake during removal.
Injectors and fuel rail are removed as an assembly.
Hardest part is the coolant lines to the throttle body as they are small and the lower one is kind of a pain to get fingers in there.
Thread Starter
Intermediate
Joined: Nov 2008
Posts: 42
Likes: 2
From: marietta georgia
Thanks for the info.
Do I need to replace any gaskets or bolts when putting the intake back on? Or just use the existing? Any idea what the torque specs are?
This will be a big job for me but hopefully easier than going to a dealer.
Do I need to replace any gaskets or bolts when putting the intake back on? Or just use the existing? Any idea what the torque specs are?
This will be a big job for me but hopefully easier than going to a dealer.
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Chance are you can reuse your intake gaskets. Although I chose to replace them, the original gaskets were still in good shape.
Tighten the intake manifold bolts a first pass, in sequence, to 44 lb in. Then do a final pass, in sequence, to 89 lb in.
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Instructor
Joined: May 2004
Posts: 120
Likes: 0
From: Bloomington Illinois
I just finished fixing my '02 Z06, which began showing the P0410 code when I brought it out of hibernation this March. After much reading of the very helpful information on this forum, I checked my HVAC controls to make sure they were operating OK - they were not. Turns out I had a small battery leak over the winter, and the acid ate holes in two vacuum lines under the battery tray. One of those lines controls the function of the AIR pump. I had to remove the right front wheel, remove the access panel in the wheel well, and then remove the computer module to actually get at the vacuum lines clearly. Once I found the holes in the vacuum lines by touch, I cut out the offending bits of damaged vacuum line and spliced in new nylon 1/8" OD vacuum lines from Advance Auto, using rubber vacuum connectors at each end of the splices. There was no way to test the fix without hooking everything back up, so I reassembled the computer wiring and reversed the teardown. The car started right up, no codes, and I have no more P0410 problems! My HVAC also works fine now. Just wanted to let others know that the key is to clearly diagnose what is really causing the code before jumping to the conclusion that the problem is related to the check valves. Cheers! 
Drifting
Joined: Sep 2008
Posts: 1,389
Likes: 3
From: somewhere shooting my assault rifles
Anyone with HPTuners can disable and set DTC to not report that problem for you and you will pass emissions. Visually it will all still look functional and stock equipment still remains on car and no one will know otherwise.
Or
You can fix it
Or
You can fix it
Pro
Joined: Aug 2010
Posts: 593
Likes: 9
From: San Antonio Texas
Just have a tuner revise the parameters in the computer and this becomes a non issue. I had it done and it cost about $100 along with some other street tune changes that really improved the driveability of the car. You can chase this around and spend lots of money replacing this and that. It is an unncessesary system and does nothing. Once it is programmed out you never have to worry about it again. IMHO.
Thread Starter
Intermediate
Joined: Nov 2008
Posts: 42
Likes: 2
From: marietta georgia
Wow I like the idea of having this tuned out. So on a emissions scan how does the "secondary air system display" after being tuned out? NA? Ready?
Any idea's who in the Atlanta area would offer this service?
Any idea's who in the Atlanta area would offer this service?
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Thread Starter
Intermediate
Joined: Nov 2008
Posts: 42
Likes: 2
From: marietta georgia
P0410
Well I went with the option to have the code disabled. Went to a local tuner MTI racing. I just skated through the emissions test and got my tag.
However, after pulling out from the emissions tester the check engine light went on and am getting a P0171 system too lean bank 1.
I am waiting on a reply from MTI. But my concern is there a problem running with this code? Can being too lean cause damage to the pistions? plugs? engine?
However, after pulling out from the emissions tester the check engine light went on and am getting a P0171 system too lean bank 1.
I am waiting on a reply from MTI. But my concern is there a problem running with this code? Can being too lean cause damage to the pistions? plugs? engine?
Thread Starter
Intermediate
Joined: Nov 2008
Posts: 42
Likes: 2
From: marietta georgia
Well they said only adjusted the fans, disabled the p0410 code and tuned the traction control. I did not ask for anything other than the p0410 code. Now they say I have to replace the front bank o2 sensors. Not happy with their answer. I cant image they just went bad 12 miles from leaving their shop.
